WATCH: Khloe AND True both ignore Tristan Thompson at first birthday party

This is hard to watch.

As expected, Khloe Kardashian went ALL out for her daughter True's first birthday.

What wasn't expected, was her father Tristan Thomspon to attend the festivities...

But just because Tristan showed his face, it doesn't mean he was well received. His own daughter didn't even to seem to want him when he was trying to get her attention.

WATCH BELOW:

How awkward!

Khloe was clearly giving Tristan the cold shoulder, but she wasn't petty enough to ruin the party for her daughter.

While everyone sang Happy Birthday to True, Khloe let Tristan hold her for the special moment.

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Side note: can we take a moment to appreciate Khloe and True's matching outfits?

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ADORABLE!